Step 0: Add a backup pumpThis was done in early 2021, not during this build.
We had a month between closing on the new house and selling our old house. This was during peak COVID, so I did not any workers in the house when we had moved in. So, during this one month, we got the hardwood floors done (severely allergic, triggered by dust from the carpet) and got a backup pump put in.
I always thought that a backup pump was always battery operated. My home inspector told me about a water-powered pump that does not need any electricity. Works off town water. This would not work if you have well water, but that is not a problem we have. Also, having lived thru Hurricane Sandy (I'm in NJ which got hit badly) and the big east coast blackout, I've had power failures, but have never had town water supply fail. So, this was a great solution for us.
There were two manufacturers I could find during the pandemic. Liberty is very well known and of very good quality. Unfortunately, they placed the pump right at the sump which also doubles as a radon pit. So, I went with the other option, Basepump, which is available from Home Depot. My handyman spent 4-5 hours setting this up.
So, I do have a backup pump,
@GuitarStv.
Additionally, I have a brand new pump, identical to what I use right now (ProSeries) which I can swap out in 5 minutes.
These have already proved their worth. When the existing pump broke, six months after we moved in, the water-powered pump kicked in. Surprising, they are very noisy.
Additionally, I got solar/battery on my house, so power failures will not impact the primary pump.
After the pump install, I found that my airtight sump cover (for radon mitigation) was not very airtight. Plenty of holes and cracks. I had to replace it, I made my own cover a few months after. I'll write more about it in another post.